Ospprearm

When Microsoft Office is installed without a product key, it typically enters a (often 30 days) during which it is fully functional. ospprearm.exe allows users to "rearm" this status, resetting the grace period timer back to its initial state.

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If successful, you will see a dialog box (or a command line response) saying: ospprearm

If your Office apps are showing an activation error, follow these steps to use the rearm tool: When Microsoft Office is installed without a product

If you install Office on a "Golden Image" computer, and you plan to clone that computer to 50 other machines, you want the licensing state to be clean. If you don't rearm the image before capturing it, the cloned computers might fail activation or report weird licensing errors because they all think they are the same machine with the same timer. If you don't rearm the image before capturing

If you are unsure if the rearm worked, or how many rearms you have left, you can ask Office directly.